Mike Cook took 5-36 and Ben Humpage 4-15 as Long Marston were rolled over for just 72 at Abingdon Vale in Division 2.
Marston had won the toss and elected to field, and with only Chris Roderick (39) getting going, the visitors looked well placed when Peter Toovey (6-54) reduced Vale to 103-9.
But a spirited last-wicket stand of 41 took the home side to 144 all out, which proved twice as many as Marston could manage.
Abingdon Vale 25pts, Long Marston 5
Oxford & Bletchingdon Nondescripts failed to win for the first time since the 2006 season, but came within one wicket of maintaining their amazing run at Leighton Buzzard Town.
Nondies made 225-9 after being inserted, Jeremy Liddy top-scoring with 90, while left arm seamer Dan Scott took 4-57.
Andy Ward (63) and Tom Scott (54) gave Town hope, but Mark Strong took 5-55 to leave them hanging on for a draw on 187-9.
Leighton Buzzard Town 10, Oxford & Bletchingdon Nondescripts 16
The loss of six overs to rain left Challow & Childrey and Bledlow Ridge wondering what might have been in their draw.
Ridge made 194-9 after choosing to bat, Russell Turner hitting 54 and Steve Bird 56.
Nick Meadows then followed up his 3-35 by scoring 43 for Challow, but Ben Keeping's 4-42 meant the home side finished on 168-6.
Bledlow Ridge 12,Challow & Childrey 10
South African Riaan Krynauw hit 102 for Tiddington in their high-scoring draw at Bourton Vale.
The visitors were bowled out in the final over for 238, Ryan Hill taking 4-56.
Nawaz Mucadam then hit 62 and Tom Arkell 40 for Vale, but despite managing to squeeze in two extra overs, Tiddington could not prise out the last batsman and the hosts closed on 220-9.
Bourton Vale 11, Tiddington 17
Dinton's batsmen had no answer to Milton Keynes Park seamer James Clark, who took 7-26 as they were dismissed for 101 after electing to bat.
Park skipper Graham Simpson then struck an unbeaten 58 as the visitors cruised to 103-4.
Dinton 5, Milton Keynes Park 25
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